<?php
?>
<div>
	<?php echo $msg; ?>,click <a href="javascript:window.history.go(-1);">here</a> to back(in <div style="display:inline;" id="second">5</div> s)
	<script>setInterval(function(){ var obj = document.getElementById("second");s = obj.innerHTML;if(s==1){window.history.go(-1);}else{obj.innerHTML = --s;}},1000)</script>
</div>